Such a colourful idea, but quite time consuming as each brick needs to be moulded individually. If you could provide the characters I could do a cake like this for or I can make sugarpaste characters for each.
Instead of Jell-O shots this would be great with watermelon jello and blue raspberry jello for Serve w/ canned whipped cream. XXL Watermelon Jell-O-Shots. How have I not thought of this? I think I need to try this for the this year.